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ASUS launches Xonar Essence One hi-fi USB digital-to-analogue converter, headphone amplifier

The world's first DAC with 8x symmetrical up-sampling technology.

With most modern audio signals stored in digital format, the ASUS Xonar team has catered to audiophiles' needs and launched its first hi-fi USB digital-to-analogue converter (DAC), the Xonar Essence One.

It is an industry-leading high-end USB DAC with the world's first 8x symmetrical up-sampling technology, while also featuring a 120dB signal-to-noise ratio (SNR), audiophile-class headphone AMP and 11 operational amplifier (op-amp) design for distinct tonal customisation.

Xhead = Hi-fi audio achieved with world's first 8x symmetrical up-sampling technology

While common up-sampling USB DACs indistinguishably transfer various audio sources to 192kHz, the Xonar Essence One up-samples 44.1/88.2/176.4kHz input to 352.8kHz and 48/96/192kHz input to 384kHz symmetrically (note: 44.1*8=352.8kHz; 48*8=384kHz). As a result, data volume is also increased by up-sampling the bit-rate to 32bit, corresponding to the original content and faithfully preserving the details of the user's music collection.

Xhead = Extreme audio clarity with 120dB SNR, dedicated power supply

The average SNR, of other USB DACs is about 110dB, but with an extremely high 120dB SNR, the Xonar Essence One provides audiophiles with clearer sounds, enabling minute sound details to be heard while significantly reducing noise levels. A dedicated power supply ensures that clean power is delivered so the sharpest sound is heard, with excellent immunity to noise from the AC line.

Xhead = Eleven swappable OP-amps for customisable tonal characters

The Xonar Essence One features a fully swappable op-amp design, unprecedented for a high-end USB DAC. An op-amp is the key part in a DAC that amplifies the analog signal and affects tonal characteristics, such as darkness or brightness of sound or the overall sound image.

The Xonar Essence One allows the user to swap every op-amp that is on board, for a truly customisable sound.

Xhead = More than just USB DAC, complete hi-fi enjoyment

The Xonar Essence One combines three different functions, providing a complete hi-fi solution:

1. USB DAC (digital-to-analogue convertor) It upgrades digital music stored on your computer into clear and detailed, life-like sounds. It also features XLR and RCA connections for plugging end audio devices.

2. Standalone DAC With an S/PDIF input and input selection, the Xonar Essence One also serves as an independent DAC, which can connect to standard CD/DVD players and provide high-quality music without the need for a computer.

3. Headphone amplifier The Xonar Essence One integrates an audiophile-class headphone AMP circuit, which powers up all hi-fi headphones, enabling 100% performance even with impedance of sets up to 600ohms. It offers extra dynamics, sound details and low distortion for the absolute best sound quality possible.



Asus is a leading company in the new digital era. With a global staff of more than eight thousand and a world-class R&D design team, the company's turnover for 2007 was 6.9 billion US dollars. Asus ranks among the top 10 IT companies in BusinessWeek's “InfoTech 100”, and has been on the listing for 11 consecutive years. Asus was also selected by the Wall Street Journal Asia as number one in quality and service in Taiwan.